i want to know how can i set a geofence on google maps and it will draw a circul according to my geofence.

i saw it is possible in that link can someone explain how to do it?

http://geocool.reperion.com/Web/forums/post/32.aspx

Sure, just click the geofence buttion the Google Maps page, you must then zoom in to the level that you want to create the fence. Or zoom out if you want to make a really big geofence... Then enter your email adress in the textbox and click SAVE

 When correct, the website will diplay : GeoFence Saved !! Please report your findings